511161253556 has 24 divisors (see below), whose sum is σ = 897460195296. Its totient is φ = 254744246880.

The previous prime is 511161253531. The next prime is 511161253583. The reversal of 511161253556 is 655352161115.

It is a super-2 number, since 2×511161253556² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13913171 + ... + 13949861.

It is an arithmetic number, because the mean of its divisors is an integer number (37394174804).

Almost surely, 2^511161253556 is an apocalyptic number.

It is an amenable number.

511161253556 is a deficient number, since it is larger than the sum of its proper divisors (386298941740).

511161253556 is a wasteful number, since it uses less digits than its factorization.

511161253556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47999 (or 47997 counting only the distinct ones).

The product of its digits is 135000, while the sum is 41.

The spelling of 511161253556 in words is "five hundred eleven billion, one hundred sixty-one million, two hundred fifty-three thousand, five hundred fifty-six".